Start/Stage an experiment

curl -X POST 'https://api.growthbook.io/api/v1/experiments/exp_abc123/start' \
  -H 'Authorization: Bearer YOUR_API_KEY'

import requests

url = "https://api.growthbook.io/api/v1/experiments/{id}/start"

payload = {
    "skipChecklist": True,
    "ignoreWarnings": True
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({skipChecklist: true, ignoreWarnings: true})
};

fetch('https://api.growthbook.io/api/v1/experiments/{id}/start', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.growthbook.io/api/v1/experiments/{id}/start",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'skipChecklist' => true,
    'ignoreWarnings' => true
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.growthbook.io/api/v1/experiments/{id}/start"

	payload := strings.NewReader("{\n  \"skipChecklist\": true,\n  \"ignoreWarnings\": true\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.growthbook.io/api/v1/experiments/{id}/start")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"skipChecklist\": true,\n  \"ignoreWarnings\": true\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.growthbook.io/api/v1/experiments/{id}/start")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"skipChecklist\": true,\n  \"ignoreWarnings\": true\n}"

response = http.request(request)
puts response.read_body

{
  "experiment": {
    "id": "<string>",
    "trackingKey": "<string>",
    "dateCreated": "2023-11-07T05:31:56Z",
    "dateUpdated": "2023-11-07T05:31:56Z",
    "name": "<string>",
    "type": "standard",
    "project": "<string>",
    "hypothesis": "<string>",
    "description": "<string>",
    "tags": [
      "<string>"
    ],
    "owner": "<string>",
    "archived": true,
    "status": "<string>",
    "autoRefresh": true,
    "hashAttribute": "<string>",
    "hashVersion": 1,
    "variations": [
      {
        "variationId": "<string>",
        "key": "<string>",
        "name": "<string>",
        "description": "<string>",
        "screenshots": [
          "<string>"
        ]
      }
    ],
    "phases": [
      {
        "name": "<string>",
        "dateStarted": "<string>",
        "dateEnded": "<string>",
        "reasonForStopping": "<string>",
        "seed": "<string>",
        "coverage": 123,
        "trafficSplit": [
          {
            "variationId": "<string>",
            "weight": 123
          }
        ],
        "targetingCondition": "<string>",
        "namespace": {
          "namespaceId": "<string>",
          "enabled": true,
          "range": [
            123
          ],
          "ranges": [
            [
              123,
              123
            ]
          ]
        },
        "prerequisites": [
          {
            "id": "<string>",
            "condition": "<string>"
          }
        ],
        "savedGroupTargeting": [
          {
            "matchType": "all",
            "savedGroups": [
              "<string>"
            ]
          }
        ]
      }
    ],
    "settings": {
      "datasourceId": "<string>",
      "assignmentQueryId": "<string>",
      "experimentId": "<string>",
      "segmentId": "<string>",
      "queryFilter": "<string>",
      "inProgressConversions": "include",
      "attributionModel": "firstExposure",
      "statsEngine": "bayesian",
      "goals": [
        {
          "metricId": "<string>",
          "overrides": {
            "delayHours": 123,
            "windowHours": 123,
            "window": "conversion",
            "winRiskThreshold": 123,
            "loseRiskThreshold": 123,
            "properPriorOverride": true,
            "properPriorEnabled": true,
            "properPriorMean": 123,
            "properPriorStdDev": 123,
            "regressionAdjustmentOverride": true,
            "regressionAdjustmentEnabled": true,
            "regressionAdjustmentDays": 123
          }
        }
      ],
      "secondaryMetrics": [
        {
          "metricId": "<string>",
          "overrides": {
            "delayHours": 123,
            "windowHours": 123,
            "window": "conversion",
            "winRiskThreshold": 123,
            "loseRiskThreshold": 123,
            "properPriorOverride": true,
            "properPriorEnabled": true,
            "properPriorMean": 123,
            "properPriorStdDev": 123,
            "regressionAdjustmentOverride": true,
            "regressionAdjustmentEnabled": true,
            "regressionAdjustmentDays": 123
          }
        }
      ],
      "guardrails": [
        {
          "metricId": "<string>",
          "overrides": {
            "delayHours": 123,
            "windowHours": 123,
            "window": "conversion",
            "winRiskThreshold": 123,
            "loseRiskThreshold": 123,
            "properPriorOverride": true,
            "properPriorEnabled": true,
            "properPriorMean": 123,
            "properPriorStdDev": 123,
            "regressionAdjustmentOverride": true,
            "regressionAdjustmentEnabled": true,
            "regressionAdjustmentDays": 123
          }
        }
      ],
      "lookbackOverride": {
        "type": "date",
        "value": 123,
        "valueUnit": "minutes"
      },
      "regressionAdjustmentEnabled": true,
      "sequentialTestingEnabled": true,
      "sequentialTestingTuningParameter": 123,
      "postStratificationEnabled": true,
      "decisionFrameworkSettings": {
        "decisionCriteriaId": "<string>",
        "decisionFrameworkMetricOverrides": [
          {
            "id": "<string>",
            "targetMDE": 123
          }
        ]
      },
      "metricOverrides": [
        {
          "id": "<string>",
          "windowType": "conversion",
          "windowHours": 123,
          "delayHours": 123,
          "properPriorOverride": true,
          "properPriorEnabled": true,
          "properPriorMean": 123,
          "properPriorStdDev": 123,
          "regressionAdjustmentOverride": true,
          "regressionAdjustmentEnabled": true,
          "regressionAdjustmentDays": 123
        }
      ],
      "activationMetric": {
        "metricId": "<string>",
        "overrides": {
          "delayHours": 123,
          "windowHours": 123,
          "window": "conversion",
          "winRiskThreshold": 123,
          "loseRiskThreshold": 123,
          "properPriorOverride": true,
          "properPriorEnabled": true,
          "properPriorMean": 123,
          "properPriorStdDev": 123,
          "regressionAdjustmentOverride": true,
          "regressionAdjustmentEnabled": true,
          "regressionAdjustmentDays": 123
        }
      }
    },
    "ownerEmail": "<string>",
    "fallbackAttribute": "<string>",
    "disableStickyBucketing": true,
    "bucketVersion": 123,
    "minBucketVersion": 123,
    "resultSummary": {
      "status": "<string>",
      "winner": "<string>",
      "conclusions": "<string>",
      "releasedVariationId": "<string>",
      "excludeFromPayload": true
    },
    "shareLevel": "public",
    "publicUrl": "<string>",
    "banditScheduleValue": 123,
    "banditScheduleUnit": "days",
    "banditBurnInValue": 123,
    "banditBurnInUnit": "days",
    "banditConversionWindowValue": 123,
    "banditConversionWindowUnit": "days",
    "linkedFeatures": [
      "<string>"
    ],
    "attributeScopeAllProjects": true,
    "hasVisualChangesets": true,
    "hasURLRedirects": true,
    "customFields": {},
    "customMetricSlices": [
      {
        "slices": [
          {
            "column": "<string>",
            "levels": [
              "<string>"
            ]
          }
        ]
      }
    ],
    "precomputedUnitDimensionIds": [
      "<string>"
    ],
    "defaultDashboardId": "<string>",
    "templateId": "<string>",
    "statusUpdateSchedule": {
      "startAt": "2023-11-07T05:31:56Z",
      "stopAt": "2023-11-07T05:31:56Z",
      "stopAfter": {
        "value": 123,
        "unit": "hours"
      },
      "scheduledStopPlan": {
        "mode": "notify",
        "tiebreakerMetricId": "<string>",
        "fallback": "notify",
        "fallbackVariationId": "<string>"
      }
    },
    "nextScheduledStatusUpdate": {
      "type": "start",
      "date": "2023-11-07T05:31:56Z"
    },
    "enhancedStatus": {
      "status": "Running",
      "detailedStatus": "<string>"
    }
  },
  "message": "<string>"
}

{
  "message": "<string>",
  "code": "checklist_incomplete",
  "details": {
    "remainingChecklistItems": [
      {
        "key": "<string>",
        "required": true,
        "status": "complete",
        "manual": true,
        "reason": "<string>",
        "hardBlock": true
      }
    ]
  }
}